<template>
  <view>
    <!-- <my-search :bgcolor="'pink'" :radius="3"></my-search> -->
    <my-search @click="gotoSearch"></my-search>

    <view class="scroll-view-container">
      <scroll-view class="left-scroll-view" scroll-y="true">
        <!-- block相当于vue的<></> -->
        <block v-for="(item,index) in cateList" :key="index">
          <view :class="['left-scroll-view-item',index==active?'active':'']" @click="activeChanged(index)">
            {{item.cat_name}}
          </view>
        </block>


      </scroll-view>
      <scroll-view :scroll-top="scrollTop" class="right-scroll-view" scroll-y="true">
        <view class="cate-lv2" v-for="(item2,i2) in  cateLevel2" :key="i2">
          <view class="cate-lv2-title">
            /{{item2.cat_name}}/
          </view>
          <view class="cate-lv3-list">
            <view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
              <image :src="item3.cat_icon.replace('dev','web')"></image>

              <text>{{item3.cat_name}}</text>
            </view>
          </view>


        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  export default {
    mixins: [badgeMix],
    data() {
      return {
        cateList: [],
        active: 0,
        cateLevel2: [],
        scrollTop: 0
      };
    },
    onLoad() {
      this.getCateList()
    },
    methods: {
      async getCateList() {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/categories')
        if (res.meta.status != 200) return uni.$showMsg()
        this.cateList = res.message

        this.cateLevel2 = res.message[0].children

      },
      activeChanged(index) {
        this.active = index
        this.cateLevel2 = this.cateList[index].children
        this.scrollTop = this.scrollTop == 0 ? 1 : 0
      },
      gotoGoodsList(item) {
        uni.navigateTo({
          url: '/subpkg/goods_list/goods_list?cid=' + item.cat_id
        })
      },
      gotoSearch() {
        uni.navigateTo({
          url: '/subpkg/search/search'
        })
      }
    }
  }
</script>

<style lang="scss">
  .scroll-view-container {
    display: flex;
  }

  .left-scroll-view,
  .right-scroll-view {
    height: calc(100vh - 50px)
  }

  .left-scroll-view {
    width: 120px;

    .left-scroll-view-item {
      background-color: #f7f7f7;
      line-height: 60px;
      text-align: center;
      font-size: 12px;

      &.active {
        background-color: #fff;
        position: relative;

        &::before {
          content: '';
          display: block;
          width: 3px;
          height: 30px;
          background-color: #C00000;
          position: absolute;
          top: 50%;
          left: 0;
          transform: translateY(-50%);
        }

      }
    }

  }

  .cate-lv2-title {
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    padding: 15px 0;
  }

  .cate-lv3-list {
    display: flex;
    flex-wrap: wrap;


    .cate-lv3-item {
      width: 33.33%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;

      image {
        width: 60px;
        height: 60px;
      }

      text {
        font-size: 12px;
      }
    }
  }
</style>
